Today, I am sharing jQuery interview Questions you should know especially if you are preparing for a job interview. There are several questions but I will only share some for now and save the remaining ones for later posts.
Before we look at some questions, it is important to know that if you don’t know an answer to a question during any type of job interview including jQuery interviews, it is good to say that you don’t know the answer instead of making stuff up. Now that we have that honesty piece out of the way, let us enter the jQuery interview questions part:
jQuery Interview Questions
1)What is jQuery?
2)What are the advantages of using jQuery?
- It has AJAX capabilities
- Easy to learn, use and expand
- Great built-in methods
- From the definition, it is cross-browser.
- Makes DOM Manipulation and Traversal easier.
3)Is jQuery a client-scripting or server-scripting library?
jQuery is used for client-scripting.
5)Can you use other client-scripting libraries alongside jQuery?
Yes you can. You can achieve this by using jQuery.noConflict() function to avoid any conflicts resulting from the use of $() by other libraries.
6)What does $ mean in jQuery?
The dollar sign is simply an alias for jQuery. That means you can use jQuery() instead of $(). In fact, you can use your own character in place of the $() – using jQuery.noConflict().
7)What is a Content Delivery Network (CDN)?
A large distributed system of servers deployed in different data centers across the internet. Normally intended to serve content to end-users with high availability and performance.
8)Where does code execution begin in jQuery?
Execution starts from $(document).ready() function which gets executed once the DOM is loaded.
9)Can you have multiple document.ready() functions on the same page?
Indeed. We can have as many document.ready() functions as we want.
10)How do you load jQuery?
- You can load jQuery locally or
- Load from a CDN like Google, Microsoft or jQuery
< !DOCTYPE html>
Loading from a CDN:
< !DOCTYPE html>
11)How do you load jQuery when a CDN fails to deliver?
Load locally when CDN fails: